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ARM: highbank: add suspend support

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Add the platform suspend ops for highbank.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Rob Herring 2011-05-15 12:44:17 -05:00 committed by Arnd Bergmann
parent 9680b3d04d
commit 8b61f37440
2 changed files with 56 additions and 0 deletions
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1
arch/arm/mach-highbank/Makefile
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@ -3,3 +3,4 @@ obj-$(CONFIG_DEBUG_HIGHBANK_UART) += lluart.o
obj-$(CONFIG_SMP) += platsmp.o
obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
obj-$(CONFIG_PM_SLEEP) += pm.o

55
arch/arm/mach-highbank/pm.c Normal file
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@ -0,0 +1,55 @@
/*
* Copyright 2011 Calxeda, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/init.h>
#include <linux/io.h>
#include <linux/suspend.h>
#include <asm/proc-fns.h>
#include <asm/smp_scu.h>
#include <asm/suspend.h>
#include "core.h"
#include "sysregs.h"
static int highbank_suspend_finish(unsigned long val)
{
cpu_do_idle();
return 0;
}
static int highbank_pm_enter(suspend_state_t state)
{
hignbank_set_pwr_suspend();
highbank_set_cpu_jump(0, cpu_resume);
scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
cpu_suspend(0, highbank_suspend_finish);
return 0;
}
static const struct platform_suspend_ops highbank_pm_ops = {
.enter = highbank_pm_enter,
.valid = suspend_valid_only_mem,
};
static int __init highbank_pm_init(void)
{
suspend_set_ops(&highbank_pm_ops);
return 0;
}
module_init(highbank_pm_init);